Evaporating-pan



2 Sheets-Sheet (No Model.)

J, E. WEAVER. Evaporating Pan. 0.241.258.

Patented May 10, i881.

-Zhmanior;

N; PETERS, Phohiflhographor, Wfisfiingion. D. C.

2 Sheets-'-Sheet 2.

(No Model.)

J. E. WEAVER. Evaporating Pan.

No. 241,258. Patented May/10,1881.

HRH

Wifnbdotea n am N. PETERS. Fhoto-Liihographar. Wuhinghn, C.

part of my specification, Figure 1 is a perspec- PATENT OFFICE.

JAMES E. WEAVER, OF ALLEGHENY, PENNSYLVANIA.

EVAPORATlNG-PAN.

SPECIFICATION forming part of Letters Patent No. 241,258, dated May 10, 1881.

Application filed May 8, 1880. (No model.)

To all whom it may concern:

Be it known that I, JAMES E. WEAVER, of Allegheny, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvementin Evaporatiu g-Pans; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon.

My invention relates to an improvement in evaporating-pans; and it consists in the peculiar construction hereinafter described.

To en able others skilled in the art with which my invention is most nearly connected to make and use it, I will proceed to describe its construction and operation.

In the accompanying drawings, which form tive view of my improvement in evaporatingpans. Fig. 2 is a vertical and longitudinal section of the same at line mot Fig. 1. Fig. 3 is a vertical and transverse section of the same at line 3 of Fig. 1. Fi 4 is a transverse section of the same when constructed without a topthat is to say, when it is an open pan. Fig. 5 is a longitudinal section of the same when constructed without a top--in other words, when when it is an open pan. Fig. Gis an enlarged view of a section of my improvement.

The evaporatingpan represented in the accompanying drawings is provided with an evaporating-chamber, A, and steam-chamber B. The partition-plate 0 forms the bottom of the evaporating-chamber A and top of the steam-chamber B. The bottom I), top E, and partition 0 are each furnished with a flange, f, which is riveted to the sides G. The flange f of the partition 0 should be in depth more than theintended depth of theliquorflowing through the chamber A. Vertically through the chambers A B pass three hollow rivets, the ends of which are upset similar to the upsetting of the ends of the tubes in the construction of tubular boilers.

Insupporting the pan over its furnace supporting-rods are passed up through the bore of the rivets H and attached to supporting-timbers.

In constructing the pan, the bottom D, top

E, and partition 0 are placed on top of each other and clamped firmly together. The openings for the stay-bolts i and j are then drilled or punched through the three so that they will be in line with each other, so as to properly receive said stay-bolts. These openings are then tapped -that is, furnished with screwthreads corresponding to the screw-threads on the stay-bolts iandjcare being taken to make a tight fitot' said bolts in said openings -that is to say, said bolts should tit said openings so neatly as to require considerable force to screw them into said openings. The flanges f being formed, and the necessary openings made in them and the sides G for the rivets, the bottom D is then riveted to the sides G and the edge of the flaugef, and the lower edge of the sides Gare chipped and calked. The partition 0 is then riveted to the sides Gr, and its flange f chipped and ealked. The bolts 6 are then screwed into their openings in the partition 0 and bottom D, and riveted or upset, as indicated at K. The top Eis then placed in position and riveted to the sides G, and the top edges of the sides and flange chipped and calked. The bolts j are then screwed in their openings in the top E, partition 0, and bottom D, and their ends riveted or upset, as shown at l in Fig. 6.

In some cases the evaporating-panis c011- structed without the top E, forming what is known as an open cvaporatin g-pan, atransverse section and longitudinal section of which are shown in Figs. 4 and 5, but in all other respects is the same in construction as the evaporating-pan represented in Figs. 1, 2, 3, and 6.

In the construction of the evaporating-pan hereinbetore described about two of the bolts 43 are used to one of the bolts 9', for the reason that the steam-chamber B is subjected to the greater pressure. The great number of screw stay-bol ts used adds greatly to the strength of the pan and also to its efficiency in evaporating, for they take up the heat from the steam and transmit it to the partition U, over which flows the liquor to be evaporated.

By making the flangefot" the partition 0 of greaterdepth vertically than the depth of the liquor flowing over its surface the liability to leakage at the calked seam ot' the flange is ob viated.

The chambers A and B are furnished with or rivets H, for the reception of supportingsuitable inlet and outlet openings, the arrangerods, as and for the purpose specified.

ment of which I leave to the skill of the art. 2. An evaporating-pan having chambers A Having thus described my improvement, and B, with the fiangef of the partition 0, 5 what I claim issubstantially as herein described, and for the I5 1. The herein-described evaporating-pan, purpose set forth. composed of the bottom and top D E and in- JAS. E. WEAVER. termediate partition 0, forming chambers A D, I Witnesses:

screw-bolts i and j, having screw-threads ex- J. J. JOHNSTON,

1). O. ALLEN.

Io tending their entire lengths, and hollow bolts 

